Bag



E. KUGLER BAG Filed May 29' 1958 IN VEN TOR- yBY United States Patent 3,117 ,712 BAG Emanuel Kugler, 296 Hungry Harbor Road, Valley Stream, N.Y.

Filed May 29, 1958, Ser. No. 738,852 2 Claims. (Cl. 229-62) This invention relates to the construction of bags and more particularly to thermoplastic bags adapted to receive articles through an opening which may be sealed and which are provided with another closure through which access may be had to the interior of the bag after such sealing.

In accordance with the present invention, a tubular bag may be provided which includes oppositely disposed front and back face panels. A first one of these panels has a longitudinally extending portion which is folded over an end of the second panel and overlies the second panel for a portion of its length adjacent that end. The other end of the second panel forms an edge which is at least partially longitudinally spaced from a cooperating edge formed by an end of the first panel to form an open end of the bag.

Various objects, features and advantages of the invention will appear from the description taken in connection with the accompanying drawings which form a part of this specification and illustrate by way of example certain embodiments of the invention. The invention consists in such novel features and combination as may be shown and described in connection with the articles herein disclosed.

For a better understanding of the invention, reference should be had to the accompanying drawings in which:

FIG. l is a plan view of one face of a bag constructed in accordance with the invention;

FIG. 2 is a sectional view taken along line 2 2 of FIG. l;

FIG. 3 is a plan View of another bag constructed in accordance with a modification of the invention;

FIG. 4 is a sectional view taken along line 4 4 of FIG. 3;

FIG. 5 is a plan view of another bag constructed in accordance with a further modified form of the invention;

FIG. 6 is a sectional view taken along line 6--6 of FIG. 5;

FIG. 7 is a plan view of still another bag constructed in accordance with another modified form of the invention;

FIG. 8 is a sectional view taken along line S-S of FIG. 7; and

FIGS. 9 and 10 are partial plan views showing bags constructed in accordance with another modification of the invention.

Referring to FIGS. l and 2, a tubular bag 51 is shown. The bag 51 is formed from relatively thin flexible thermoplastic material such as polyethylene of any suitable thickness such as between about 0.0005 to about 0.003 inch. Thermoplastic material is preferred for use in constructing bags such as 51 since such material may be heat sealed to effect the sealing together of various parts of the bag. The bag 51 may be constructed by any suitable means such as by properly cutting and folding a single piece of material but is preferably constructed from two or more pieces of material which may, for instance, be severed from one or more rolls of material and secured together as described below.

The bag 51 has a front panel 52 and a back panel 53 which are secured together along the longitudinal edges 51a and Slb (FIG. l) of the bag as by heat sealing. A longitudinal extension of the back panel 53 is folded ,ll7,7l2 Patented Jan. 14, 1964 ice over in a gusseted fold to form a iiap 54 which extends partially over the front panel 52 and cooperates therewith to forni the front face of the bag. The longitudinal edges of the flap 54 are secured to the corresponding edges of the front and back panels along the longitudinal edges 51a and SIb of the bag. The opening formed by the overlapping edges of the flap 54 and the front panel 52 is remote from the closed end of the bag formed by the gusseted fold 55 and is near the other end of the bag. The transverse edge 54a of the flap 54 and the inner transverse edge 52b of the front panel 52 are left unsecured thus providing a re-entrant opening to allow access to the interior of the bag as by passing the hand between the front panel 52 and the flap 54. The transverse edge 53a of the back panel 53 extends beyond the outer transverse edge 52a of the front panel 52 to facilitate the insertion of the articles into the bag. The respective edges 54a and 53a can be formed in any suitable relationship in which these edges are at least partially longitudinally spaced with respect to each other to form an open end or mouth of the bag. After the bag has been filled by inserting the contents thereof through the opening thus provided, the opening may be closed as by heat sealing and the extending portion of the back panel 53 may be cut off if desired. It can be seen that the location of the re-entrant opening which remains available for inspection purposes after the bag is filled and sealed will facilitate such inspection where a number of such bags are stacked one upon the other.

A bag is shown in FIGS. 3 and 4 as having a front panel 61 and a back panel 62 with an extension of the back panel being folded over in a gusset fold 64 to form a iiap 63 overlying a portion of the front panel. In bag 60 the inspection opening formed by the overlapping portions of flap 63 and the front panel 6l is located remote from the pleated fold forming one end of the bag for the reasons discussed above with reference to bag 51.

The chief difference between the bag 60 disclosed in FIGS. 3 and 4 and the bag S1 previously described with reference to FIGS. l and 2, is that in the bag 60 the front panel 6l extends beyond the back panel 62 at the open end of the bag, whereas in the bag 51 disclosed in FIGS. l and 2, the back panel 53 extends beyond the front panel 52. Thus, in bag 51 disclosed in FIGS. l and 2, the loading opening is somewhat more readily accessible from the front face of the bag; while in bag 6) disclosed in FIGS. 3 and 4 the loading opening is somewhat more easily accessible from the rear face of the bag. Otherwise the bag 60 has the structural features described in greater detail relative to the bag 5l of FIGS. l and 2.

FIGS. 5 and 6 show a bag 65 having a front panel 66 and a back panel 67 with an extension of the back panel being folded about a fold line 68 which forms one end of the bag to form a iiap 69 which overlies a portion of the front panel 66 and cooperates with the front panel in forming the front face of the bag. In bag the opening formed by the overlapping of the liap 69 with the front panel 66 is located at a point which may be at substantially the other end of the bag. The location of this opening in the position shown in FIGS. 5 and 6 has the same advantages described above with reference to the location of a similar opening in bag 51 (FIG. l).

FIGS. 7 and 8 show a bag 70 having a front panel 71 and a back panel 72 with a longitudinal extension of the back panel being folded about a fold line 73 which forms one end of the bag to form a ap 74 which overlies a portion of the front panel adjacent one of its ends and cooperates with the front panel to form the front face of the bag. In the bag the inspection opening formed by the overlapping edges of the flap 74 and the front panel 71 is remote from the end of the bag formed by the fold line about which the flap is folded and, in fact may be n.3 at substantially the other end of the bag as shown. The positioning of such opening in this manner has the same advantages referred to above in connection with the positioning of a similar opening on bag 51 described in connection with FIGS. 1 and 2.

FIGS. 9 and 10 illustrate two of the many further modiications which may be employed in accordance with the invention. In FIG. 9, for instance, a bag 80 is shown in which the open end of the bag is formed by an inverted lip 81 forming an end of the front panel acting in cooperation with a straight lip or edge 82 forming an end of the back panel. It can be seen that the construction shown in FIG. 9 shows the use of an inverted lip. After iilling the bag 80, the end of the bag through which the articles are inserted may be sealed as by heat sealing along the dotted line 83.

Likewise, FIG. 10 shows a bag 84 having a front panel terminating in a straight lip 85 and a back panel terminating in an extended lip 86. After lling through the opening thus formed, the bag may be sealed as by heat sealing along the lip 85 or along a seal line such as 87. It should be understood that the modifications shown in FIGS. 9 and 10 may be used with any of the bags previously described and that these, as well as other similar modifications, may be used on any bags constructed in accordance with the invention.

While the invention has been described in detail with respect to certain preferred embodiments and modifications thereof, it will be understood by those skilled in the art that various changes and modications may be made without departing from the spirit and scope of the invention and it is intended to cover all such changes and other modifications in the appended claims.

What I claim is:

1. A tubular bag having a closed end and an open opposite end and comprising a back panel of substantially uniform Width and having substantial length, said back panel providing a transverse edge thereof at said opposite end of the bag and said back panel having a longitudinal extension, said longitudinal extension being folded into oppositely disposed relation With respect to said back panel to provide said closed end of the bag at the fold and, further, to provide an elongated flap extending from 4 the fold towards said opposite end of the bag, said ap having length which is shorter than said length of the back panel to provide a transverse edge of the ap near said opposite end of the bag but longitudinally spaced from said transverse edge of the back panel, and a front panel having very short length relative to said length of said ap and having width which is substantially equal to said width of the back panel, said front panel being disposed between said ap and said back panel at said opposite end of the bag, said front panel having one transverse edge underlying said flap to provide a reentrant opening of said bag substantially adjacent its said opposite end, and said front panel having another transverse edge in longitudinally spaced relation with respect to said transverse edge of the back panel to provide a iilling lip of the bag at its said opposite end, said ap and said back panel and said front panel being attached along their respective cofacing marginal edges to provide opposed side edges of said bag.

front panel overlies said transverse edge of the back panel.

References Cited in the tile of this patent UNITED STATES PATENTS 1,149,657 Loft Aug. 10, 1915 1,466,658 .Tones Sept. 4, 1923 1,576,488 Hodgson Mar. 9, 1926 1,944,151 Butterfield et al. Ian. 23, 1934 2,069,549 Hutt Feb. 2, 1937 2,150,985 Plummer Mar. 21, 1939 2,197,490 Williams et al Apr. 16, 1940 2,620,842 Hoeppner et al Dec. 9, 1952 2,643,049 Bartelt June 23, 1953 2,668,769 Schlienz Feb. 9, 1954 2,693,836 Hayes Nov. 9, 1954 2,709,467 Hoeppner May 31, 1955 2,761,480 Tames Sept. 4, 1956 2,873,566 Sylvester et al Feb. 17, 1959. 2,878,849 Lingenfelter et al Mar. 24, 1959 2,921,731 Volckening Jan. 19, 1960 FOREIGN PATENTS 549,840 Canada Dec. 10, 1957 2. A tubular bag according to claim 1 wherein said I 

1. A TUBULAR BAG HAVING A CLOSED END AND AN OPEN OPPOSITE END AND COMPRISING A BACK PANEL OF SUBSTANTIALLY UNIFORM WIDTH AND HAVING SUBSTANTIAL LENGTH, SAID BACK PANEL PROVIDING A TRANSVERSE EDGE THEREOF AT SAID OPPOSITE END OF THE BAG AND SAID BACK PANEL HAVING A LONGITUDINAL EXTENSION, SAID LONGITUDINAL EXTENSION BEING FOLDED INTO OPPOSITELY DISPOSED RELATION WITH RESPECT TO SAID BACK PANEL TO PROVIDE SAID CLOSED END OF THE BAG AT THE FOLD AND, FURTHER, TO PROVIDE AN ELONGATED FLAP EXTENDING FROM THE FOLD TOWARDS SAID OPPOSITE END OF THE BAG, SAID FLAP HAVING LENGTH WHICH IS SHORTER THAN SAID LENGTH OF THE BACK PANEL TO PROVIDE A TRANSVERSE EDGE OF THE FLAP NEAR SAID OPPOSITE END OF THE BAG BUT LONGITUDINALLY SPACED FROM SAID TRANSVERSE EDGE OF THE BACK PANEL, AND A FRONT PANEL HAVING VERY SHORT LENGTH RELATIVE TO SAID LENGTH OF SAID FLAP AND HAVING WIDTH WHICH IS SUBSTANTIALLY EQUAL TO SAID WIDTH OF THE BACK PANEL, SAID FRONT PANEL BEING DISPOSED BETWEEN SAID FLAP AND SAID BACK PANEL AT SAID OPPOSITE END OF THE BAG, SAID FRONT PANEL HAVING ONE TRANSVERSE EDGE UNDERLYING SAID FLAP TO PROVIDE A REENTRANT OPENING OF SAID BAG SUBSTANTIALLY ADJACENT ITS SAID OPPOSITE END, AND SAID FRONT PANEL HAVING ANOTHER TRANSVERSE EDGE IN LONGITUDINALLY SPACED RELATION WITH RESPECT TO SAID TRANSVERSE EDGE OF THE BACK PANEL TO PROVIDE A FILLING LIP OF THE BAG AT ITS SAID OPPOSITE END, SAID FLAP AND SAID BACK PANEL AND SAID FRONT PANEL BEING ATTACHED ALONG THEIR RESPECTIVE COFACING MARGINAL EDGES TO PROVIDE OPPOSED SIDE EDGES OF SAID BAG. 